[Bug 599255] Re: dmraid fails to read promise RAID sector count larger than 32-bits

[Phillip Susi]

I'm not sure why you can't build it, but the part of the source of most
interest is pdc.c.  The problem is that promise has never provided
specifications for the format, so it was reverse engineered.  The other
problem is that it looks like the Windows driver pretends the disk has a
larger sector size when you go over 2 TiB, and the kernel device-mapper
driver does not have a way to change the sector size, so the kernel
would need patched.

Your best bet is to simply avoid using volumes over 2 TiB.

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Title:
  dmraid fails to read promise RAID sector count larger than 32-bits

Status in “dmraid” package in Ubuntu:
  Triaged
Status in Baltix GNU/Linux:
  New
Status in “dmraid” package in Fedora:
  New

Bug description:
  I have two amd sb7*** motherbord. I tryed two case.

  I use raid0(1.5TB x 3=4.5TB) by bios(SB7*0).

  I partitioned two array. 2.0TB(A) and 2.5TB(B).

                     win7-64
                     winxp32    ubuntu10.4 /fedora13
  ------------------------------------------------------------------
  raid-A 2.0TB   ok              ok          all capacity OK
  raid-B 2.5TB   ok (all)       no*1      only 300GB(NG)
  ------------------------------------------------------------------
  *1=ubuntu knows only 300gb. fedora too.

  ubuntu x64/Fedora13 x64,by DMRAID

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